Accelerated Rendering: Turned

Minecraft's older immediate rendering system sends entities and block entities to OpenGL one at a time on a single render thread. With large numbers of entities, especially complex modded ones with many vertices, that work can leave the CPU busy while the GPU sits idle and the frame rate falls. This mod builds its own rendering pipeline: it caches the original vertices before transforming them, uploads them once, and runs the transformation in parallel on the GPU with compute shaders. The transformed vertices are then drawn with the original shader.

The changes are limited to the client. Because the mod only affects how entities are drawn, servers and other players are unaffected, and the mod is meant to work alongside shader packs and Iris Shaders, with an option to switch the acceleration off for better compatibility. Immersive Portal compatibility is listed among its changes. The code is open source under the MIT License, and the source is public.

Hardware is the main constraint. The GPU must support OpenGL 4.6, including buffer mapping that stays resident and compute shaders. Some older NVIDIA and Intel integrated chips may meet this, and the author reports testing on several NVIDIA laptop and desktop GPUs and AMD RX 580 and RX 5600XT. Mobile devices are listed as supported. Files are published for Forge only, covering 1.20.1 – 1.20.6.